Well actually I'm using UTM because I'm not familiar with the qemu commands.
The first problem I met is that it bsod on start with the 0xA5 code saying the BIOS wasn't fully ACPI compliant and tells me to press F7 to use the text mode setup.
I did try pressing F7 and then I got another bsod 0x7B.
Then I tried changing all drives from IDE to SCSI (yeah I know this should fail) and still holding down F7 on startup, but finally I see the setup screen. But neither my mouse nor my keyboard was usable. Any help?